* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-tertiary: #1f1f1f;
    --text-primary: #ececec;
    --text-secondary: #8e8e8e;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border: #2d2d2d;
    --error: #ef4444;
    --success: #10b981;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 3rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header svg {
    color: var(--accent);
    margin-bottom: 1rem;
}

.auth-header h1 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
}

.form-group input {
    padding: 0.875rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group small {
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

.form-group.checkbox {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
}

.form-group.checkbox input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-group.checkbox label {
    font-weight: 400;
    font-size: 0.8125rem;
}

.text-link, .form-group a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

.text-link:hover, .form-group a:hover {
    color: var(--accent-hover);
}

.btn-submit {
    padding: 0.875rem;
    background: var(--accent);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.btn-submit:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.error-msg {
    padding: 0.875rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    border-radius: 8px;
    color: var(--error);
    font-size: 0.875rem;
    margin-top: -0.5rem;
}

.success-msg {
    padding: 0.875rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    border-radius: 8px;
    color: var(--success);
    font-size: 0.875rem;
}

.auth-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.auth-footer a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    color: var(--accent-hover);
}

@media (max-width: 480px) {
    .auth-card {
        padding: 2rem 1.5rem;
    }
}